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首页> 外文期刊>International journal of intelligent engineering informatics >New CSMA/CA prioritisation based on fuzzy control mechanism
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New CSMA/CA prioritisation based on fuzzy control mechanism

机译:基于模糊控制机制的新的CSMA / CA优先级划分

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摘要

Wireless sensor networks (WSNs) consist of several small nodes that use different types of sensors to gather different types of data and to communicate with each other through several protocols. The IEEE 802.15.4 presents a soft medium access control (MAC) protocol that provides good efficiency for data transmission by adapting its parameters according to characteristics of different applications. The main idea of this paper is to apply a dynamic allocation of priority level for nodes that compete for the access to the medium through tuning parameters in the carrier sense multiple access/collision avoidance (CSMA/CA) algorithm. A priority scheduling is achieved using a fuzzy logic mechanism exploiting queue level and traffic rate of each node in order to ensure adequate dynamic allocation. This paper demonstrates various advantages of priority-based CSMA/CA for quality of service (QoS). Results show significant improvements achieved by our approach among the IEEE 802.15.4 MAC standards.
机译:无线传感器网络(WSN)由几个小节点组成,这些节点使用不同类型的传感器来收集不同类型的数据并通过多种协议相互通信。 IEEE 802.15.4提出了一种软媒体访问控制(MAC)协议,该协议通过根据不同应用程序的特性调整其参数来为数据传输提供良好的效率。本文的主要思想是为通过在载波侦听多路访问/冲突避免(CSMA / CA)算法中调整参数来争夺对介质的访问的节点应用优先级的动态分配。使用模糊逻辑机制来实现优先级调度,该机制利用队列级别和每个节点的流量速率来确保足够的动态分配。本文展示了基于优先级的CSMA / CA对于服务质量(QoS)的各种优势。结果表明,我们的方法在IEEE 802.15.4 MAC标准中取得了显着改善。

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